Control board for elevators



Oct. 2, 1928.

F. A. HECHT, JR

CONTROL BOARD FOR ELEVATORS Filed May 26, 1924 2 Sheets-Sheet H o o o o o o o o o 6 o f JwarZE Tan/0 J7. Hcchi W M w 7 w;

Oct. 2, 1928.

F. A. HECHT, JR

CONTROL BOARD FOR ELEVATORS 2 sheets-sheet 2 Filed May 26, 1924 mu mw mm rum 11H w WM .M W

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UNITED STATES P TENT oF c'E.

mam: A. near, 32., or extreme, rumors, assienoa To xnas'maa a new conrm, 0] CHICAGO, ILLINOIS,

A. CORPORATION OF ILLINOIS.

CONTROL BOARD FOR ELEVATORS.

Application Med May 26,

system are mounted. Heretofore, the heavy wiring has been done at the to of the board,

the lead wires being directed t erefrom to all parts of the panel in asnarled and complicated manner. As a result, (prior control boards have been confusing an unsightly in appearance, and the electrical units thereon have been illogically arranged. The wiring has been unsafe and unserviceable thereby giving rise to fire hazard, bad electrical connections, and deterioration of the insulation.

v The above features are particularly disadvantageous when the control boards, as is usually the case, are located in the basements of the buildings in which the elevators are installed, 'or in other out-of-the-way places where thelead wires and connections are exposed to dirt, moisture and injury.

The primary object of my invention therefore is to rovide a self-contained control '30 'panel boar for electric elevator systems in which the incoming conduits, the conduit con- .nections, and a major part of all the lead wires to the panel are completely enclosed by a unitary supporting structure to protect ll! them from dirt, moisture, mechanical injury and the like, whereby fire hazard and the probability of poor electrical connections are reduced, and ,increased'efiiciency, serviceability and safet are obtained.

Another o ject is to provide a control board for elevator systems. in which-the in-' not thereby intend to limit my invention, but

1924. Serial No. 716,078.

enclosing and guiding the incoming conduits and lead wires.

Still another object is to provide a self-contalned control board for electrically controlled elevators which comprises a complete- 1;; wired panel and a junction box to which t e leads from the panel are connected, so that the board can be manufactured as a complete operative unit and can be easily and quicklg' installed by merely connecting the leads rom the conduit to the terminal board of the junction box.

A general object is to provide a control board of pleasing appearance which is compact and sturdy in construction, and in which the wiring is enclosed, protected, and efficiently distributed.

Further objects and advantages will become apparent as the description proceeds.

In the accompanying drawings wherein I have illustrated the preferred embodiment, Figure 1 1s a front view of a control board constructed according to my invention.

2 is a side view thereof. F 1g. 3 is a rear viewpartially sectioned in the plane of line 3-3 ofFig. 2.

Fig. 4 is a horizontal section taken in the plane of line 4-4 of Fig. 1.

, Fig. 5 is a horizontal section through the base taken in the plane of line 55 of Fig. 3. While I have shown in the drawingsand will herein describe in detail the preferred embodiment of my invention for purposes of illustration, it is to be understood that I do aim 1n the appended claims to cover all legitimate modifications and alternative constructions falling within the spirit and scope of the same.

In its exemplary embodiment, theinvention consists o a vertical anel 10 secured to the front of a supporting rame 11 on a main base 12. The base 12 preferably is a shallow closed casting of rectilinear dimensions open on its lower side and adapted to set on a 1 0 floor 13 of concrete or other suitable material over an inlet when extending up through the floor for admitting an electrical conduit '15. -A plurality of bolts 16 having their heads embedded in the concrete floor 13 'serve'to '105 hold the base 12 rigidly in place.

The frame 11 is made up of a lurality of angle irons suitably joined togetlier to form a support for the panel 10 at the front edge of the base12. In the present instance, two

' wires to the upper half of the panel extend vertical irons 17 are connected at the topby an iron 18, and at the bottom to a air of horizontal irons 19 which are rigi y attached to the upper wall of the base 12 by a plurality of bolts 20. Extending up from the rear of the base'12 to substantially the same height as the irons 17 are a pair of hollow tubular standards 21 connected at their upper end by a cross member 22. The lower ends of the standards 21 extend through holes 23 in the top of the base 12, and have nuts 24 threaded thereon to hold them firmly in position. To obtain rigidity, the angle irons 17 are connected at several points along their length to the standards 21 by arms or brackets 25, preferably T-shaped in crosssection. Mounted across the central legs of the two lower arms 25 and between the standards 21 is a depending frame 26 supporting a plurality of resistance coils 27.

The panel comprises a pair of slabs or boards 28 of any suitable insulating material secured to the front legs of the angle irons 17 by a plurality of bolts 29. Any desired number of suitable electrical devices '30, such as electromagnetic switches for controlling the operation of the elevator, are adapted to be mounted on the front of the panel 10.

The wiring will now be described. Mounted within the base 12 on lugs 31 extending inwardly from the side walls is a terminal board 32 of insulating material. Lead wires 33 from the conduit are connected to a plurality of terminal binding posts 34 on the board 32. Attached to the posts 34 are a plurality of lead wires 35 passing from the base 12 through a number of insulating bushings 36 in the to to the electrical devices on the lower hal of the panel 10. Other lead wires 37 are collected from the terminal board 32 into a pair of conduits 38 which extend upwardly throu h the hollow standards 21 and pass from t e standards 21 and cross member 22 through outlet boxes 39 connected therein to the electrical devices 30 on the upper portion of the panel 10. In the present instance, the wires and 37 are attached to the rear ends of a plurality of binding parts 40 extending through the panel 10 to their respective units 30. To facilitate making the connections on the terminal board 32, the base 12 is provided with a removable cover 41 openin at the top and rear, and normally held in p ace by screws 42.

By this construction, the wiring is distributed from the base instead of the top of the panel board. The terminal connections with the conduit are completely enclosed by the base which in effect is a junction box. Lead wires to the lower half of the panel pass out directly through the top of the base, and

upward through the supporting standards for the panel and are distributed from the top of the frame 11. Thus most of all the wires to the panel is completely enclosed and out of view. The wires are not tangled at the back of the panel and are well protected. The bulk of the wiring can be done at the factory. All that is necessary for in stallin the control board is to connect the lead wires from the conduit to the terminal posts in the base 10. The device is neat, artistic, safe, and serviceable.

' I claim as my invention:

1. A control panel board comprising, in combination, a closed base open on its lower side and having a removable cover, a supporting frame mounted on said closed base and comprising a pair of hollow tubular standards, a vertical panel secured to the front of said frame for supporting a plurality of electrical devices, a terminal board mounted within said base and supporting a plurality of terminal binding osts, an incoming electrical conduit exten ing into said base from below and having its wires connected to said binding posts, a lurality of lead wires attached to certain 0 said binding posts and extending directly out of said base to the lower portion of said anel, and a plurality of lead wires attache ,to others of said binding posts and passing through said hollow standards to the top of said frame from where they are distributed to the electrical devices on the upper portion of said panel. r 2. A control board for elevators comprismg, in combination, a base ,open at the bottom and having a removable cover plate closing the top, a rectangular support mounted along the front edge of said base, a pair of hollow tubular standards extending up from the rear of said base and connected at their up er ends by a hollow cross member, a plurality of outlet boxes connected in said cross member, a pluralit of arms connecting said support and sai standards, a panel on said support, a plurality of binding posts on said panel, a terminal plate mounted with in said base and supportin a plurality of terminal binding posts, a pfilrality of bushmgs mounted in the top of said base, an electrical conduit extending into said base from below, the lead wires of said conduit being attached to said-terminal binding posts, lead wires attached to certain of said terminal binding posts and passing through said bushings out of said base to binding posts on the lower portion of'said panel, and lead wires. attached to others of said terminal posts and passing through said tubular standards out of said outlet boxes to binding posts on the upper half of said panel, and electrical devices mounted on said panel in electrical connection with said binding posts.

. 3. A control board for elevators comprisng, in combination, a closed base, a s pporting frame mounted on said base, sai frame duit, certain of said lead wires having a plurality of hollow vertical standards, a panel secured to the front of said frame, a terminal board mounted within said base, wires extending from said terminal board and said base directly to the lower portion of said panel, and other wires extending from said board through said hollow standards to the upper portion of said panel, and devices on said panel having electrical connectionswith said leads. g

4. A controlboard for elevators comprising, in combination, a closed base, a supporting frame mounted on said base, a panel secured to the front of said frame, an electrical conduit extending into said base, and lead Wires for connecting said conduit to said panel, the lead wires to the lower portion of said panel passing directly-out of said base to said panel, and the lead wires to the upper portion of said panel extendin from said base through closed parts of said frame to the upper end of said frame and from there to the upper portion of said panel.

5. A control board for elevators comprising, in combination, a closed base, a: frame comprising a pair of vertical tubular standards, outlet boxes connected in the upper portion of said frame in communication with said standards, an electrical conduit extending into said base, and a'plurality of lead wires connected with the wires of said conassing directly outof said base to electricaFdevices on the lower portion of said panel, and others of said lead wires passing out of said base through said tubular standards and outlet boxes to electrical-devices on the upper portion of said panel.

6. A control board for elevators comprising, in combination, a base, means for holding said base in position, a pair of hollow standards extendin u from said base and communicating wit t e interior thereof, a

panel supported on said base, a plurality of electrical devices mounted 'on said panel, a conduit extending into said base, lead wires connected with said conduit, certain of said said standards to electrical devices on saidpanel, and junction means within said base for connecting said lead wires to an incoming conduit.

8-. A control board for elevators comprising, in combination, a closed base, a frame mounted on said base, said frame having a hollow vertical member extending substanti'ally to the top thereof and communicating with the interior of said base, a panel mounted on said base and secured to said frame, a terminal board in said base, a lurality of electrical devices mounted on sai panel, lead wires extending into said hollow member from said board and out of said member to said electrical devices. 7

In testimony whereof, I have hereunto affixed my signature.

Y FRANK A. HECHT, J R. 

